scholarly journals Fabrication and Performance of Laterite East Kotawaringin-Zeolite/Chitosan Composite as Slow Release of Iron Fertilizer

Molekul ◽  
2018 ◽  
Vol 13 (2) ◽  
pp. 148
Author(s):  
Rendy Muhamad Iqbal ◽  
Sri Wardhani ◽  
Darjito Darjito ◽  
Karelius Karelius
Keyword(s):  
Slow Release ◽  
Batch Method ◽  
Laterite Soil ◽  
Central Kalimantan ◽  
Fe Content ◽  
And Performance ◽  
Chitosan Composite ◽  
Slight Amount ◽  
Chitosan Gel ◽  
Iron Fertilizer

Laterite soil is one of natural resources in East Kotawaringin regency, Central Kalimantan, Indonesia, which contains high element of Fe. Fe is one of micronutrients that is needed for plant in slight amount. This study aims to determine the effect of chitosan composition and composition of zeolite : laterite on the release of Fe activities from synthesized fertilizers result. Laterite is characterized by using XRF and XRD. Slow release iron fertilizer is synthesized by eliciting laterite to zeolite matrix. Then, It is stirred into chitosan gel with concentration of 2, 2.6, and 2.8 % for 30 minutes. After Zeolite - laterite - chitosan has been homogenized, then it is dropped into 0.4 M NaOH to form beads. Then testing the release of Fe with the batch method in distilled water. The result showed that the laterite soil is amorphous form, and Fe content reached 80.25 % . The higher the concentration of chitosan which is used , then more Fe is released from fertilizer. Whereas if the amount of zeolite is greater, the slower the release of Fe will be.

Preparation and Characterization of Polylactic Acid Fiber Enhanced Hydroxyapatite/Chitosan Composites

2011 ◽  
Vol 368-373 ◽  
pp. 321-325
Author(s):  
Hai Rong Yin ◽  
Quan Xian Zu ◽  
Yang Wu
Keyword(s):  
Polylactic Acid ◽  
Composite Plate ◽  
Influence Factors ◽  
Orthogonal Test ◽  
Pecking Order ◽  
Bending Modulus ◽  
Chitosan Matrix ◽  
Ft Ir ◽  
And Performance ◽  
Chitosan Composite

A novel hydroxyapatite/chitosan composite plate enhanced by polylactic acid fiber is prepared via in–situ hybridization in the semipermeable mold. The influence factors of the composites are evaluated by orthogonal test; FT–IR, XRD and SEM are also used to determine the relevance between the composition and performance. Analyses show that: hydroxyapatite with weak crystalline state is generated in the composites; there is hydrogen bonding associating existing in the complex system; preferable interface junction is created between the fiber and hydroxyapatite /chitosan matrix, which is able to play benign potentiation to the mechanical strength. Orthogonal test finds that the pecking order of the influencing factors to physical properties is: fiber content > fiber length > hydroxyapatite content. HA/CS composite plate enhanced by PLA–fiber can get a significantly increase on flexural strength and bending modulus, therefore, it will be a kind of potential orthopaedic materials which possesses the ability of completely degraded.

scholarly journals Comparative effectiveness of vitamin-mineral complexes with iron in correcting iron deficiency in women in the outpatient setting

2018 ◽  
Vol 90 (12) ◽  
pp. 56-60
Author(s):  
A A Svistunov ◽  
M A Osadchuk ◽  
N V Kireeva ◽  
A E Lazareva ◽  
D A Shorina ◽  
...  
Keyword(s):  
Performance Indicators ◽  
Comparative Effectiveness ◽  
Social Activity ◽  
Preventive Therapy ◽  
Outpatient Setting ◽  
Fe Content ◽  
Sf 36 ◽  
The Difference ◽  
And Performance

Aim. To compare the efficacy of prophylactic administration of mineral-vitamin complexes "Feroglobin-B12" and "Complivit iron" with different degrees of Fe valence. Materials and methods. 120 female subjects were examined. To determine the quality of life, the SF-36 questionnaire was used. The presence of anxiety was determined on the Spielberger-Khanin Alarm Scale. 30 women with a deficit of Fe were divided into 2 groups of 15 people each. The first group received "Ferroglobin-B12", the second - "Complivit iron" for a month. Results. In a month after the initiation of preventive therapy in women of the 1 group the content of Fe serum was normalized. In the second group, its concentration approached the control values. The difference in Fe content in the 1 and 2 groups was of a reliable nature. Conclusion. The intake of "Ferroglobin-B12" was not accompanied by side effects, and performance indicators, social activity and mental health reached control values, unlike the group of patients taking Complivit iron.

scholarly journals THE EFFECT OF MASS OF COAL FLY ASH-CHITOSAN COMPOSITE PELLETS MODIFIED WITH GLUTARALDEHYDE ON THE ADSORPTION OF MERCURY IN SOLUTION

2017 ◽  
Vol 3 (1) ◽  
pp. 17-19
Author(s):  
Isna Syauqiah ◽  
Umi Baroroh Lili Utami ◽  
Meina Wulansari Yusniar
Keyword(s):  
Fly Ash ◽  
Coal Fly Ash ◽  
Chemical Activation ◽  
Composite Pellet ◽  
Know How ◽  
Physical Chemical ◽  
Low Concentrations ◽  
Composite Pellets ◽  
Chitosan Composite ◽  
Chitosan Gel

Fly ash can be used and utilized as an adsorbent because it is cheap and effective to adsorb waste in the aquatic environment. Hg also known as Mercury is a carciogenic heavy metal and potentially threatens human health at very low concentrations. In this study, fly ash was applied as the adsorbent for Hg2+ in the form of chitosan-fly ash composite pellet and was cross-linked with glutaraldehyde in order to know how much the mass of pellets that can be used to lower the concentration of Hg2+ in solution. The results showed that the fly ash can be compositated with chitosan gel after going through the process of physical-chemical activation so that it can be formed into adsorbent pellets/granules. The optimum condition was obtained from adsorbent pellets of fly ash-chitosan composite crosslinked with glutaraldehyde after contacted with a solution containing Hg2+ with the pellet mass of 3 g.

Effect of polyolefin resin coated slow release iron fertilizer and its methods of application on rice production in calcareous soil

2004 ◽  
Vol 50 (7) ◽  
pp. 1037-1042 ◽  
Author(s):  
K. Singh ◽  
H.C. Sharma ◽  
C.S. Singh ◽  
Y. Singh ◽  
N.K. Nishizawa ◽  
...  
Keyword(s):  
Calcareous Soil ◽  
Slow Release ◽  
Rice Production ◽  
Methods Of Application ◽  
Iron Fertilizer

scholarly journals Nutrition and Performance of Container-Grown Japanese Black Pine Seedlings

1984 ◽  
Vol 2 (1) ◽  
pp. 9-12 ◽  
Author(s):  
Robert D. Hathaway ◽  
Carl E. Whitcomb
Keyword(s):  
Growth Medium ◽  
Slow Release ◽  
Growing Season ◽  
Black Pine ◽  
Slow Release Fertilizer ◽  
Shoot Ratio ◽  
Japanese Black Pine ◽  
Pine Seedlings ◽  
And Performance ◽  
One Year

Growth of Japanese black pine (Pinus thunbergi Parl.) seedlings in containers was enhanced by incorporating a slow-release fertilizer (Osmocote) and micronutrient source in the growth medium while dolomite was detrimental. Seedlings transplanted into the field showed excellent survival, regardless of propagation treatment, however, plants grown with Osmocote and micronutrients in the container medium were significantly larger after 1 growing season. Root-to-shoot ratio was not related to survival or growth. Container-grown seedlings were larger after 3 months than 2-year-old conventional bed-grown plants and continued to outgrow the bed-grown seedlings after one year in the field.

Long-term exposure of Pacu (Piaractus mesopotamicus) fish to dietary aflatoxin B1: residues in tissues and performance

2021 ◽  
pp. 1-10
Author(s):  
E.C. Michelin ◽  
C.M. Bedoya-Serna ◽  
L.C.S. Carrion ◽  
S.H.S. Godoy ◽  
J.C. Baldin ◽  
...  
Keyword(s):  
High Performance ◽  
Fish Muscle ◽  
Negative Influence ◽  
Fish Feed ◽  
Piaractus Mesopotamicus ◽  
And Performance ◽  
Aflatoxin B ◽  
Slight Amount ◽  
Standard Weight

The objective of this work was to evaluate the aflatoxins residues on tissues of Pacu (Piaractus mesopotamicus) fish chronically exposed to dietary aflatoxins, also evaluating the effects on fish performance. Aflatoxins were incorporated into the extruded fish feed and the concentrations were confirmed by high performance liquid chromatography (HPLC). The experimental design comprised the following treatments: Control – feed without toxin; Treatment A: feed + 10 μg aflatoxin B1 (AFB1)/kg; Treatment B: feed + 20 μg AFB1/kg and Treatment C: feed + 50 μg AFB1/kg. Pacu juvenile were allocated in tanks with density of one fish per litter. The experiment lasted 180 days with monthly sampling, and approximately ten fish per treatment were used to compose a sample. Biometric surveys were performed every 30 days, including standard weight and length. Aflatoxins were detected and quantified in fish muscle and liver by HPLC, using immunoafinity columns. Results showed AFB1 deposition in the liver throughout the experiment in all treatments, but only treatment C differed significantly (P<0.05) from the others after 150 days, while in muscle there was low residual deposition. Long-term exposed fish had negative influence in weight and length. The higher mortality was observed in treatment C. Although there were AFB1 residues at low levels in liver and only a slight amount in fish muscle, it should be noted that accumulation is possible in the Pacu species. The diets contaminated with AFB1 negatively interfered in weight and length of fish when compared to control. Therefore, it can be concluded that long-term exposure of Pacu to dietary AFB1 can cause losses to producers.

scholarly journals Biopolymer Composites for Slow Release to Manage Pimelea Poisoning in Cattle

Proceedings ◽  
2020 ◽  
Vol 36 (1) ◽  
pp. 97
Author(s):  
Emilie Gauthier ◽  
Diane Ouwerkerk ◽  
Bronwyn Laycock ◽  
Mary Fletcher
Keyword(s):  
Slow Release ◽  
Effective Vaccine ◽  
Fluid Accumulation ◽  
Toxic Plants ◽  
Beef Producers ◽  
Biopolymer Composites ◽  
Microbial Environment ◽  
And Performance ◽  
The Right

Cattle grazing the pastures of inland Australia can be poisoned by ingestion of certain native Pimelea plant species, particularly Pimelea trichostachya and Pimelea simplex. The Pimelea toxin, simplexin, causes often fatal restriction of the pulmonary venules, with resultant heart impacts and characteristic fluid accumulation (oedema) of the jaw and brisket regions. In certain years heavy livestock losses can occur. Currently, there is no effective vaccine or antidote for Pimelea poisoning and the only management strategy is to reduce contact between toxic plants and susceptible stock, for beef producers to avoid potentially devastating poisoning events. Nevertheless, previous research has demonstrated that prolonged low dose feeding diminished the effect in animals. It was postulated that the animal exposed to prolonged low doses developed a mechanism for detoxifying simplexin, possibly through adaptation of the rumen microbial environment. The present study seeks to investigate the use of a biopolymer/toxin composite to foster toxin-degrading microbe populations. The objectives are to manufacture biopolymer composites based on biodegradable polylactic acid (PLA), polyhydroxyalkanoates (PHAs) and/or polycaprolactone (PCL), as toxin slow-release systems for the rumen that would have broad utility across a range of plant toxins and other beneficial rumen compounds. The poster covers the manufacturing, characterisation and performance of the biopolymers in a simulated rumen environment. Preliminary results of different biopolymers/composites containing Pimelea material and toxin extracts in an in vitro simulated rumen environment for up to 30 days are presented. It was found that the release rate could be tailored by choosing the right type of biopolymer.

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